Impact of channel estimation errors in amplify-andforward cooperative transmission
We analyze the impact of the channel estimation errors in amplify-and-forward (AF) cooperative communication systems over Rayleigh fading channels with multi-relays assisted. We derive the exact closed-form and the approximate expressions of the cumulative distribution function (CDF) of the received signal-noise-ratio (SNR) for each link. The variance of channel estimation errors varies for different values of the transmit SNR, dominated by the channel estimation quality order. We also present the approximate expression of the average symbol error rate (SER) under different levels of channel estimation errors by using the moment-generating function (MGF) based approach. Numerical results confirm that our theoretical analysis for SER is very accurate.
Lei Wang Yueming Cai Weiwei Yang
Institute of Communications Engineering, PLA University of Science and Technology Nanjing, China Institute of Communications Engineering, PLA University of Science and Technology Nanjing, China Nat
国际会议
上海
英文
1-5
2010-10-20（万方平台首次上网日期，不代表论文的发表时间）